Climatological Report (Daily)
Issued by NWS

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000
CDUS46 KMTR 210039
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
539 PM PDT FRI OCT 20 2017


...................................

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR OCTOBER 20 2017...
VALID TODAY AS OF 0500 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         64    238 PM  87    2015  73     -9       84
  MINIMUM         45    517 AM  36    2008  42      3       45
  AVERAGE         55                        58     -3       65

PRECIPITATION (IN)
  TODAY            T                                         0.00
  MONTH TO DATE    0.19                                      1.64
  SINCE OCT 1      0.19                                      1.64
  SINCE JAN 1     28.37                                     16.31

DEGREE DAYS
 HEATING
  TODAY           10                                         0
  MONTH TO DATE   94                                        92
  SINCE SEP 1    131                                       134
  SINCE JUL 1    141                                       191

 COOLING
  TODAY            0                                         0
  MONTH TO DATE    1                                         5
  SINCE SEP 1    133                                        67
  SINCE JAN 1    515                                       186
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   7   RESULTANT WIND DIRECTION   W (270)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED     8.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           600 AM
 LOWEST     52           300 PM
 AVERAGE    76

..........................................................


THE NAPA AIRPORT  CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   73        87      1999
 MINIMUM TEMPERATURE (F)   42        35      2004


SUNRISE AND SUNSET
OCTOBER 20 2017.......SUNRISE   723 AM PDT   SUNSET   624 PM PDT
OCTOBER 21 2017.......SUNRISE   724 AM PDT   SUNSET   623 PM PDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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